Comcast does this in america, it's a poor idea since it uses part of the subscriber's home internet bandwith, and from a security standpoint as anyone can used a hacked account on any of these wifi points for anonymous access and do anything.

Not to mention you have to use telstra home internet to the network, so it's more of a share program.

iinet had/has something like what you just mentioned. If you are an iinet customer you can share your wifi with other iinet clients, they put in the username and password of there internet and it counts to that bandwith and the wifi owner gets a small sum of money. I am unsure if they still do this and im quite sure that never kicked off